With a simple click on the description of your column (the field shaded in gray), you have the immediate possibility of sorting or filtering the values entered or displayed in your column.
This sorting can only be applied to one value. To execute a more complex sorting, use Sorted Search Criteria (see the Function Bar Menus section).
To cancel the sorted view, you can either click on the two dots above, or press F5.
The F5 key allows you to refresh the page at any point, and will also undo the effect of any sorting, search or restricted view.